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Figure: Relevant topics for the waste heat recovery
Energy efficiency is of the greatest importance in the development of a new motor. The thermal energy recovery from the waste heat in a Rankine - cycle represents a promising technique for an efficient use of fuel energy. By the reason of the complex system requirements in the automotive sector there is still no functioning system on the market. The choice of a suitable working fluid, which meets these requirements, is therefore of significant influence for the selection and design of the necessary components for the cycle. In addition to working fluids such as water, alcohols or refrigerant, the group of silicone oils also represents an interesting alternative.
The design of such a system is influenced by the selection of a suitable working fluid and many other parameters. The most important can be summarized as follows:
- the expander (turbine, piston expander, scroll expander, ...)
- the evaporator (plate heat exchanger, tube heat exchangers, ...)
- the capacitor
- the pump
For a working system it is important to consider all these aspects and all these under highly transient loads, such as those in the automotive sector. SES-Tec offers you know-how and experience in the design and simulation of such systems and supports you in the entire development process.
Related publications:
[1] Lang W., Colonna P., Almbauer R., Preliminary Design of Orc Turbogenerators for waste-heat recovery in automotive applications, ORC 2011 – First International Seminar on ORC Power Systems, Deft, Netherlands, 2011.
[2] Lang W., Colonna P., Almbauer R., Wechselwirkung von Arbeitsmedium und Komponentenauslegung bei der Entwicklung eines Systems zur thermischen Rekuperation in Kraftfahrzeugen, Arbeitsprozess der Verbrennungskraftmaschine, Graz, AUSTRIA, 2011
[3] Lang W, Colonna P, Almbauer R. Assessment of Waste Heat Recovery From a Heavy-Duty Truck Engine by Means of an ORC Turbogenerator. J. Eng. Gas Turbines Power. 2013;135(4) |
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